Duluth Weather & Climate

United States of America

Duluth sees feels-like daytime highs peak around 28.3°C in July and nighttime lows bottom out near -14.1°C in January. June is the wettest month (~93 mm), while January is the driest (~3 mm). For sunshine, August leads with about 69% clear skies.

Best time to visit Duluth

Based on mild feels-like temperatures and low rain chances, the most comfortable months are August, July, and June — expect around 17.827.1°C with roughly 35% chance of rain on a given day in August.

Duluth climate by month

MonthLow / High °CRain %RainfallClear skiesWind
January-14.1° / -7.6°1%3 mm37%17.6 kph
February-12.6° / -5.4°2%4 mm38%17.7 kph
March-6.1° / 0.8°7%18 mm42%17.4 kph
April0.8° / 7.9°18%44 mm45%16.9 kph
May7.2° / 16.3°31%73 mm49%15.3 kph
June13.3° / 23.3°39%93 mm57%14.1 kph
July18° / 28.3°38%88 mm67%13.4 kph
August17.8° / 27.1°35%82 mm69%13.7 kph
September12.6° / 20.6°31%77 mm61%15.1 kph
October4.6° / 11.8°23%56 mm52%16.2 kph
November-3.8° / 2.2°11%28 mm45%16.5 kph
December-11° / -5.2°4%10 mm38%16.9 kph

Feels-like temperatures from long-term historical data; ☀ marks the most comfortable months (mild temperatures, low rain).

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